solution.cpp

#include <iostream>
using namespace std;
bool is_leap(int year)
{
    return (year % 4 == 0 && year % 100 != 0) || year % 400 == 0;
}
int main()
{
    int y, m, d, ans = 0;
    cin >> y >> m >> d;
    int L_m_d[12] = {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
    int nonL_m_d[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

    if (is_leap(y)) //判断闰年
    {
        for (int i = 0; i < m; i++) //记录1-（m-1）月天数
        {
            ans += L_m_d[i];
        }
        ans += d;
    }
    else
    {
        for (int i = 0; i < m; i++)
        {
            ans += nonL_m_d[i];
        }
        ans += d;
    }
    cout << ans << endl;
    return 0;
}